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96 条记录 (耗时 0.015 秒)

    Phosphoric ester of cellulose derivative and metal adsorbent comprising the same
    32.
    发明授权
    Phosphoric ester of cellulose derivative and metal adsorbent comprising the same 失效
    纤维素衍生物的磷酸酯和包含它的金属吸附剂

    公开(公告)号：US07741424B2

    公开(公告)日：2010-06-22

    申请号：US11575098

    申请日：2005-09-26

    申请人： Ming Lu ,  Katsumi Yabusaki

    发明人： Ming Lu ,  Katsumi Yabusaki

    IPC分类号： C08G79/00 ,  B01D11/04 ,  C08B3/00 ,  C08B5/00 ,  C08B7/00 ,  C08B13/00

    CPC分类号： C08B5/00 ,  B01J20/26 ,  B01J20/262 ,  B01J20/265 ,  C08B11/04 ,  C08B11/08 ,  C08B11/20 ,  C08B13/00

    摘要： The present invention is directed to a phosphoric ester of 2,3-dihydroxypropyl cellulose or 3-(2,3-dihydroxypropoxy)-2-hydroxypropyl cellulose, the cellulose having optionally undergone partial carbamidation, and to a metal absorbent employing the ester, and to a metal-absorbing apparatus employing the metal adsorbent.The cellulose derivative phosphoric ester serves as a metal adsorbent which exhibits high metal adsorption performance and metal adsorption rate per unit weight; has high mechanical strength; effectively soften water or a similar liquid; removes heavy metals from wastewater or a similar liquid at remarkably high efficiency; has excellent processability and can be formed into a variety of shapes and thus is applicable within a wide range; and can readily be reutilized.

    摘要翻译： 本发明涉及2,3-二羟基丙基纤维素或3-（2,3-二羟基丙氧基）-2-羟丙基纤维素的磷酸酯，该纤维素任选经历部分氨基甲酰化，以及使用该酯的金属吸收剂，以及 涉及使用金属吸附剂的金属吸收装置。 纤维素衍生物磷酸酯用作金属吸附剂，其具有高的金属吸附性能和每单位重量的金属吸附速率; 机械强度高; 有效地软化水或类似液体; 以非常高的效率从废水或类似液体中除去重金属; 具有优异的加工性，可以形成多种形状，因此适用范围广泛; 并且可以容易地重新利用。

    Polysaccharide derivatives containing aldehyde groups, their preparation from the corresponding acetals and use as paper additives
    35.
    发明授权
    Polysaccharide derivatives containing aldehyde groups, their preparation from the corresponding acetals and use as paper additives 失效
    含有醛基的多糖衍生物，由相应的缩醛制成，用作纸添加剂

    公开(公告)号：US4703116A

    公开(公告)日：1987-10-27

    申请号：US829675

    申请日：1986-02-14

    申请人： Daniel B. Solarek ,  Patrick G. Jobe ,  Martin M. Tessler ,  Robert L. Billmers ,  Diane J. Lamb ,  John J. Tsai

    发明人： Daniel B. Solarek ,  Patrick G. Jobe ,  Martin M. Tessler ,  Robert L. Billmers ,  Diane J. Lamb ,  John J. Tsai

    IPC分类号： C07H15/04 ,  C07H15/12 ,  C08B11/04 ,  C08B11/08 ,  C08B11/14 ,  C08B31/12 ,  C08B37/00 ,  C08B37/14 ,  D21H17/24 ,  D21H17/25 ,  D21H17/28 ,  D21H17/31 ,  C08B31/02 ,  C08B31/08

    CPC分类号： C08B11/14 ,  C08B11/04 ,  C08B31/12 ,  C08B31/125 ,  C08B37/0096 ,  D21H17/24 ,  D21H17/25 ,  D21H17/28 ,  D21H17/31

    摘要： Polysaccharide aldehydes having the formula Sacch--O--CH.sub.2 --CH.dbd.CH--CHO, ##STR1## such as starch, cellulose, and gum aldehydes, are useful for imparting wet, dry, or temporary wet strength to paper. They are prepared by a non-oxidative method which involves reacting the polysaccharide base, in the presence of alkali, with a derivatizing acetal reagent having the general structure ##STR2## and then hydrolyzing the acetal by adjusting the pH to less than 7, preferably 2-4. In the formulas, n is 1-3; R.sup.11 and R.sup.12 are independently an alkyl, aryl, aralkyl, or alkaryl group when n is 1, R.sup.11 or R.sup.12 is one of the groups when n is 2, or R.sup.11 and R.sup.12 are not present when n is 3; R.sup.13 is an alkyl group, optionally containing an ether linkage, or an aralkyl group; R.sup.14 and R.sup.15 are individually a hydrogen or a methyl group; R.sup.16, R.sup.17, and R.sup.18 are individually an alkyl group; Y- is an anion; Z is an organic group capable of reacting with the polysaccharide base to form an ether derivative and selected from the group consisting of an epoxide, ethylenically unsaturated group, halohydrin, and halogen; R.sup.19, if present, is a divalent organic group containing no reactive substituents; and A and A'0 are lower alkyls or together form at least a 5-membered cyclic acetal.

    摘要翻译： 具有式Sacch-O-CH2-CH = CH-CHO，SaachOCH2CCCHO，图像，图像，图像，如淀粉，纤维素和醛醛的多糖醛是 可用于赋予纸张湿，干或临时湿强度。 它们通过非氧化方法制备，其包括在碱存在下使多糖碱与具有一般结构“IMAGE”的衍生化缩醛试剂反应，然后通过将pH调节至小于7，优选2来水解缩醛 -4。 在式中，n为1-3; 当n为1时，R11和R12独立地为烷基，芳基，芳烷基或烷芳基，当n为2时，R11或R12为基团之一，当n为3时，R11和R12不存在; R13是任选含有醚键或芳烷基的烷基; R 14和R 15分别为氢或甲基; R16，R17和R18各自为烷基; Y-是阴离子; Z是能够与多糖基反应形成醚衍生物并选自环氧化物，烯属不饱和基，卤代醇和卤素的有机基团; R19如果存在，是不含反应性取代基的二价有机基团; A和A'0是低级烷基或一起形成至少5元环缩醛。

    Ion exchanger on the basis of cellulose and process for its manufacture
    37.
    发明授权
    Ion exchanger on the basis of cellulose and process for its manufacture 失效
    离子交换剂基于纤维素及其制造方法

    公开(公告)号：US4022964A

    公开(公告)日：1977-05-10

    申请号：US600298

    申请日：1975-07-30

    申请人： Karl Heinrich Lieser ,  Peter Burba

    发明人： Karl Heinrich Lieser ,  Peter Burba

    IPC分类号： B01J39/22 ,  C08B11/04 ,  C08B11/00

    CPC分类号： B01J39/22 ,  C08B11/04

    摘要： Ion exchanges on cellulose basis containing groups of the formula ##STR1## in which R represents a functional group and n is zero or 1 are prepared, when n is zero, by reacting cellulose or a cellulose-like compound with a .beta.-hydroxyethylsulfonyl derivative and, when n is 1, by preparing a cellulose derivative from cellulose and an amino derivative of .beta.-hydroxyethylsulfone, diazotizing the cellulose derivative and introducing R-H functional groups by coupling of ligands capable of being coupled.

    摘要翻译： 在纤维素基上含有通过使纤维素或纤维素样化合物与β-羟乙基磺酰基衍生物反应，当n为零时，其中R表示官能团且n为0或1的通式为“IMAGE”的基团的离子交换; 当n为1时，通过从纤维素和β-羟基乙基砜的氨基衍生物制备纤维素衍生物，将纤维素衍生物重氮化并通过偶联能够偶联的配体引入RH官能团。

    Process for reducing the viscosity of a cellulose ether with hydrogen peroxide
    39.
    发明授权
    Process for reducing the viscosity of a cellulose ether with hydrogen peroxide 失效
    减少过氧化氢的纤维素醚粘度的方法

    公开(公告)号：US3728331A

    公开(公告)日：1973-04-17

    申请号：US3728331D

    申请日：1969-04-04

    申请人： DOW CHEMICAL CO

    发明人： SAVAGE A

    IPC分类号： C08B11/02 ,  C08B11/04 ,  C08B11/20 ,  C08B11/00

    CPC分类号： C08B11/02 ,  C08B11/04 ,  C08B11/20

    摘要： A CONTROLLED REDUCTION OF THE VISCOSITY OF A CELLULOSE ETHER IS ACHIEVED BY BLENDING AN ESSENTIALLY DRY, FREEFOWING PARTICULATE CELLULOSE ETHER WITH A PREDETERMINED AMOUNT OF HYDROGEN PEROXIDE, HEATING THE BLENDED CELLULOSE ETHER AT ABOUT 50*-150*C. TO REACT SUBSTANTIALLY ALL THE ADDED HYDROGEN PEROXIDE, AND RECOVERING A LOWER VISCOSITY, PARTICULATE CELLULOSE ETHER HAVING AN INTRINSIC FLUIDITY GREATER THAN THE INITIAL CELLULOSE ETHER. HIGH YIELDS AND A READILY CONTROLLED VISCOSITY REDUCTION AE OBTAINED.